<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <title>Decrypts data with public key</title>

 </head>
 <body><div class="manualnavbar" style="text-align: center;">
 <div class="prev" style="text-align: left; float: left;"><a href="function.openssl-private-encrypt.html">openssl_private_encrypt</a></div>
 <div class="next" style="text-align: right; float: right;"><a href="function.openssl-public-encrypt.html">openssl_public_encrypt</a></div>
 <div class="up"><a href="ref.openssl.html">OpenSSL 函数</a></div>
 <div class="home"><a href="index.html">PHP Manual</a></div>
</div><hr /><div id="function.openssl-public-decrypt" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">openssl_public_decrypt</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.0.6, PHP 5)</p><p class="refpurpose"><span class="refname">openssl_public_decrypt</span> &mdash; <span class="dc-title">Decrypts data with public key </span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.openssl-public-decrypt-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type">bool</span> <span class="methodname"><strong>openssl_public_decrypt</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter reference">&$decrypted</code></span>
   , <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$key</code></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$padding</code><span class="initializer"> = OPENSSL_PKCS1_PADDING</span></span>
  ] )</div>

  <p class="para rdfs-comment">
   <span class="function"><strong>openssl_public_decrypt()</strong></span> decrypts
   <em><code class="parameter">data</code></em> that was previous encrypted via
   <span class="function"><a href="function.openssl-private-encrypt.html" class="function">openssl_private_encrypt()</a></span> and stores the result into
   <em><code class="parameter">decrypted</code></em>.  
  </p>
  <p class="para">
   You can use this function e.g. to check if the message was written by the
   owner of the private key.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.openssl-public-decrypt-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">data</code></em></dt>

     <dd>

      <p class="para">
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">decrypted</code></em></dt>

     <dd>

      <p class="para">
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">key</code></em></dt>

     <dd>

      <p class="para">
       <em><code class="parameter">key</code></em> must be the public key corresponding that
       was used to encrypt the data.  
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">padding</code></em></dt>

     <dd>

      <p class="para">
       <em><code class="parameter">padding</code></em> can be one of
       <strong><code>OPENSSL_PKCS1_PADDING</code></strong>,
       <strong><code>OPENSSL_NO_PADDING</code></strong>.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.openssl-public-decrypt-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <strong><code>FALSE</code></strong>。
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.openssl-public-decrypt-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.openssl-private-encrypt.html" class="function" rel="rdfs-seeAlso">openssl_private_encrypt()</a> - Encrypts data with private key</span></li>
    <li class="member"><span class="function"><a href="function.openssl-private-decrypt.html" class="function" rel="rdfs-seeAlso">openssl_private_decrypt()</a> - Decrypts data with private key</span></li>
   </ul>
  </p>
 </div>


</div><hr /><div class="manualnavbar" style="text-align: center;">
 <div class="prev" style="text-align: left; float: left;"><a href="function.openssl-private-encrypt.html">openssl_private_encrypt</a></div>
 <div class="next" style="text-align: right; float: right;"><a href="function.openssl-public-encrypt.html">openssl_public_encrypt</a></div>
 <div class="up"><a href="ref.openssl.html">OpenSSL 函数</a></div>
 <div class="home"><a href="index.html">PHP Manual</a></div>
</div></body></html>
